Portable drill stand



FIG. 1 is a perspective view of a portable drill stand with a drill attached to the portable drill stand shown in broken lines for the purpose of illustrating portions of the portable drill stand and forms no part of the claimed design;

FIG. 2 is another perspective view of the portable drill stand of FIG. 1;

FIG. 3 is a front view of the portable drill stand of FIG. 1;

FIG. 4 is a rear view of the portable drill stand of FIG. 1;

FIG. 5 is a right side view of the portable drill stand of FIG. 1;

FIG. 6 is a left side view of the portable drill stand of FIG. 1;

FIG. 7 is a top view of the portable drill stand of FIG. 1; and,

FIG. 8 is a bottom view of the portable drill stand of FIG. 1. 

The ornamental design for a portable drill stand, as shown and described. 